上星期冒險升級到iOS 4.1,結果發現五天來電力損耗驚人。 I upgraded my iPhone 3Gs to iOS 4.1 last week, battery goes down very soon. 在 Apple Discussion 上有各種不同的方法,經過測試後終於得到解法。但也沒有原來在iOS 4.0 的表現好。 Here is the Apple Discussion , there are many opinions. After many trials, finally I got the solution.